# Finding quantity of energy stored in a spring

**1. The problem statement, all variables and given/known data**

Hey guys, I’m having some trouble finding the exact quantity of energy storied in this spring problem.

It’s like a problem with parts A and B, part A says "Determine the amount of work required to stretch the spring from 0 to 20 cm. I found that to be 125J. For Part B, it says "Suppose that this spring was stretched 7.753 cm. Find the exact quantity of energy stored in the spring.

**2. Relevant equations**

I think that the equation that i would use is the one for elastic energy, Ee= 1/2kx^2

**3. The attempt at a solution**

So far i have Ee= 1/2kx^2

Ee= 1/2k(7.753)^2

I’m not sure if i’m doing this right, or what to do next.

Thanks

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